Square.



I PATENTED APR. 14, 1908. G. H. STARK.

SQUARE. APPLICATION FILED JUNE 15,1907- CZMQ, Oz Qf/LZJCL .ndi'forneyo WITNESSES:

CHARLES H. STARK, OF CHICAGO, ILLINOIS.

SQUARE Specification of Letters Patent.

Application filed. June 15, 1907.

Patented April 14, 1908.

Serial No. 379,198.

To all whom it may concern:

Be itknown that I, CHARLES H. STARK, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Squares, of which the following is a specification.

This invention relates to squares, and has for its object to provide a square having a flexible arm in consequence of which it can be conveniently placed within a tool box or the like, and provided with means whereby said flexible arm may be made rigid for use.

The invention provides a square having the advantages of a folding square without the defects incident to separablejoints which are usually placed at the corner and which wear loose in time.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a plan of the square. 2 is a' plan of the same with the flexible arm removed from the sheath. Fig. 3 is a lan of the sheath. Fig. 4 is a section on t e line 44 of Fig. 1. Fig. 5 is a sectional view illustrating the manner in which the square is placed in a tool box.

Referring specifically to the drawings, 6 indicates the long arm of a square and 7 the short arm. These parts are preferably made integral, and of steel or the like. The short arm 7 is reduced in thickness to form a thin flexible blade or part which can be readily bent to fit within the tool box.

8 indicates a sheath which may be made of either wood or metal and contains a hollow into which the flexible arm 7 slides at a snug fit. By slightly tapering the hollow the blade 7 maybe made to fit tight so-that the sheath will not come ofi except by special effort. The thickness of the sheath is such that on one side, at least, it is flush with the surface of the arm 6 when put in place, so that the square will lie flat when in use. The arm 6 and sheath 8 are graduated, and the end of the sheath is squared to fit against the arm 6 and to match therewith at the corner so as to form a perfect square. The arm 7 serves to hold the sheath inproper position, while the sheath forms the rigidity necessary for the tool. The level 9 may be applied to the long arm of the square if desired. When it becomes necessary to place the square in tool box, it can be done by removing the sheath 8 and bending the arm 7, to fit within the box. A convenient way of holding the same is indicated in Fig. 5, the arm 7 being bent around angle brackets 10 fixed to one end of the tool box 11. The elasticity of the part will hold the square in place. When desired for use the sheath is slipped onto the flexible arm and a rigid square is thus formed.

I claim:

1. A square having two arms of different degrees of flexibility, the more flexible arm being sufliciently flexible to permit of its bending to semi-circular shape, and a rigid sheath closed at its sides and edges and slidable on and off the last mentioned arm.

2. A metallic square one arm of which is reduced in thickness and flexible, and a rigid sheath slidable on or off the arm, and having a surface flush with the surface of the other arm when in place on said flexible arm.

In testimony whereof I affix my signature, in presence of two witnesses.

CHARLES H. STARK.

Witnesses:

NELLIE FELTSKOG, H. G. BATOHELOR. 

